Lamp assembly



A. b. ELTING April 7, 1942 LAMP ASSEMBLY 1 Filed Nov. 17, 1939" 3Sheets-Sheet 1 IZZY/6337: f y

A. o. ELTING LAMP ASSEMBLY April 7, 1942.

Filed Nov. 17, 1939 3 Sheets-Sheet 2 I April 7, 1942. EL-nNG 2,279,034

LAMP AS S EMBLY Filed NOV. 17, 1939 3 Sheets-Sheet 5 Patented Apr. 7,1%42 UNETED STATES ATENT OFFICE LAMP ASSEMBLY I August 0. Elting,Chicago, 111. v Application November 1'7, 1939, Serial No. 304,915

.9 Claims. (01. 248-344) to manufacture, durable, and very eflicient.

An important object of the invention is the production of a device ofthe kind described in which the ordinary supporting or reinforcingtubing is omitted, the supporting arms taking the form of relativelyinexpensive castings or the like, this being accomplished to a greatextent by utilizing a channel instead of a tubular construction.

A further object of the invention i the production of improved means forsecuring the arms to the remainder of the lamp.

Another object of the invention is the production of such securing meanswhich may be utilized in substantially all types of lamp bases andcolumns, as, for example, where the supporting arms enter from the top,.from'the bottom, or from the side of the lamp, and wherein the arms maybe readily aligned with and secured to the -main part of the base orcolumn.

A further object of the invention is the construction of such an armwhich is so, constructed that it may be easily and. quickly wired, therebeing no long tubing, etc., through which the power wires must bethreaded.

Many other objects and advantages of the construction herein shown anddescribed will be obvious to those skilled in the art from thedisclosure herein given.

To this end my invention consists in the novel construction,arrangement, and combination of parts herein shown and described andmore particularly pointed out in the appended claims.

In the drawings wherein like reference characters indicate like orcorresponding parts:

Fig. l is a plan view of a lamp assembly embodying the presentinvention, the supporting means entering the bottom of the body;

Fig. 2 is a partial sectional view taken through a portion of thesupporting arm and the lamp body;

Fig. 3 is an enlarged plan view of the end of the supporting arm and aportion of the lamp body;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 3;

Fig. 5is a plan view of a locking washer;

substantially Fig. 6 is a View similar to Fig. 1 of a lamp assemblywherein the supporting arms enter the top of the body;

Fig. '7 is a'partial sectional view similar to Fig.

2 of one of the supporting arms illustratedin Fig. 6;

Fig. 8 is a plan view of another form of lockin washer;

Fig. 9 is a side elevational'view of the washer shown in Fig. 8;

Fig. 10 is a plan-view of a lamp assembly,

. wherein the supporting arms enter the body from the side thereof, aportion of the body being shown in section;

Fig. 11 is a side elevational view of one of. the supporting arms with aportion of the body shown I in section illustrating the means ofsecuring the arm to the body; and

Fig. 12 is a perspective View of a locking ring, employed in theconstruction shown in Figs. 10 and 11.

It has been customary in assemblies, for floor lamps, etc., to employtubular supporting arms I for the outletsockets, these arms beingsecured to the lamp body by inserting an end of the'tube through thebody and then flaring or fianging the I tube end to lock the same to thebody. Oftentimes, ornamentation of the supporting arm is accomplished bycasting ornamental figures or the like around the tube, the tube thenbeing fastened to the body in the manner previously described. Anothermethod employed was to provide tubular arms and ornament them withslip-on castings of various ornamental shapes.

In wiring such an assembly, the wires must be threaded through therespective tubes. tubular construction was necessary to afiord'a meansof securing the supporting arm tothe body, as well as providing apassage for the wires through the arm.

In the present construction, the tubing is omitted, the arms being sodesigned that they may be madev as a simple casting or otherwise readilyformed and provided with novel-means {)or aligning and rigidly securingthe arms to the ody. 7

Referring to Figs. 1 and 2,

l designates generally abody of the usual type comprising a bottomportion 2 and a top or cover portion 3. One

4- passes' through end of each supporting arm and is secured to thebottomportion 2 of=the body and terminate at the opposite ends in asocket supporting portion 5, and if desired, may be provided with asuitable stem 6 shown in dotted lines by which the lamp sockets arecarried. This stem This body 2|.

with any suitable type of ornamentation. Like: a wise, while the socketsupporting portion illustrated as being circular or cup-shaped, ob-

viously, this may be varied to adapt the arm to sockets, etc., ofvarious shapes and sizes. The ends of the armsv 4 engaging the body 'I'are each provided with an attaching head designated generally by thenumeral 12. Each of the latter is of a more or less triangular shapehavingconverging side walls I3 and end portions I4 and I5.

The side walls 13 and connecting end portions l4 and I5 are providedwith a continuous groove lfi' extending around the same, as shown inFig. 2. The lamp body 2 is provided with triangular shaped apertures llof a size to allow passage of the head I2 therethrough and of a shapesimilar to said head. The latter is positioned with the converging edgesof the aperture adjacent the sidewalls I3 seated in the groove l6, asshown in Figs. 2, 3, and 4, and due to the shape of the opening and thehead, the latter may be wedged inthe opening by forcing the head and armradially outward. This is accomplished by a plate I8 illustrated in Fig.5, provided with cam edges l9, there being a cam for each arm on theassembly. The radial distance of the smallest portions of the cams are.such'as toallow the plate to be positioned adjacent side walls 14 of therespective heads, after which the plate may be rotated by means of asuitable tool to engage the larger portions of the cam edges in thegrooves I6 of ,the respective side walls 14 of the heads, securely wwedging the same in the aperture.

In assembling the device,'the arms are inserted through, the aperturesl5 and moved radially outward to engage the edges of the apertures withthe-grooves [6 in the head, after which the plate l8is placed in theposition adjacent the walls l4 of the heads. The plate is rotated,thereby engaging the larger portion of the cam surfaces with the groovesI6 in the walls l4 and rigidly lock thearms to the lamp body. It mightbe mentioned that whilethe construction just described utilizes thecam'plate I8, other means may be employed forsuch a plate as willhereinafter be described.

In the construction shown in Figs. 6 and 7, the arm 24 is mounted on thetop or cover-23 of the The supporting arm 24 is constructed similarly tothe arm 4, the head 25 being substantially identical with the head l2 ofthe arm 4. However, in this construction, the bore 21 corresponding tothe bore I would be of a more or less inverted U-shape to communicatewith the channel 29 and bore 28. The arms 24 are secured to the top 23of the body by a locking ring 26 corresponding to the plate [8. As shownin Fig. 9, this ring, is in its original condition, concave, and is ofanexternal diameter to allow it to be positioned adjacent the end wallsof the means of a suitable punch press or the like, the ring 26 is thenflattened to the positionshown in heads 25, as shown in dotted lines inFig. 7. By

Fig. '7, such flattening causing the external diameter of the ring toincrease whereby the edge of the ring will engage the heads 25, asshown, securely locking the arms to the body. The ring 26 is alsoreadily interchangeable with the cam plate l8 so that either the camplate or the concave ring may be employed with the constructions shownin Figs. 1 and 6.

In the construction shown in Figs. 10 and 11, the supporting arm 34 issecured to the lamp body 3| at the sides thereof, the head 35 of the arm34 being constructed similar to the heads l2 and 25. The heads 35 arelocked in place by a ring 38 which is of an external diameter tofrictionally engage the inner side walls of the body and is forced intothe position shown in Fig. 11

in engagement with the head 35 by a suitable press or the like, the ringfrictionally engaging theside Walls of the body and securely holding thearms in place. In the arm 34, the bore 38 corresponds to thebores 8 and28 of the arms 4 and 24, respectively, and the bore 31 to the bores 1and 2] of the same, the channel 39 corresponding to the channels 9 and29.

It will be noted from the above description that I have'provided a lampof novel construction wherein all tubing, etc., is eliminated and haveprovided novel means for firmly securing the arm to the body. It willalso be noted that I have provided a supporting arm construction whichmay be inexpensively made, such as by die casting, etc.

Having thus described my invention, it is obvious thatvarious immaterialmodifications may be madein the same without departing from the spiritof my invention; hence, I do not wish to be understood as limitingmyself to the exact form, construction, arrangement or combination ofparts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1.. In a lamp,'the combination of a body member having an aperturetherein and an arm, one end of which is positioned in said aperture, thelatter being of a greater size than the adjacent end fof .said arm topermit entry of said arm transversely through the aperture, said armhaving a recess thereinadapted to receive an adjacent edge of saidaperture, and means for urging said arm laterally towards said adjacentedge to maintain the latter within said recess.

2. In a lamp, the combination of a body member having a plurality ofapertures therein, each aperture having a pair of converging edges, anda plurality of arms, corresponding ends of which are positioned inrespective apertures, the latter each being, of a greater size than theends of said arms to permit the passage of said ends transverselythrough said apertures, each of said arms having a recess thereinadapted to receive the converging edges of its aperture, and meanscommon to said arms for urging the sam lateral- 1y to maintain the edgesof the apertures within the respective recesses.

3. In a lamp, the combination of a body member having a plurality oftriangularly shaped apertures therein, a plurality of arms, triangularattaching heads positioned at corresponding ends of said arms, saidheads being disposed in reshaped body member having a plurality ofapersaid recess portions toward the edges of the respective apertures tomaintain said edges within the respective recesses.

4. In a lamp, the combination of a body member having a plurality ofapertures therein, a plu-' rality of arms, corresponding ends of whichare positioned in respective apertures and engageable with said bodymember, and a member having cam portions thereon engageable uponrotation of the member with said arms to maintain the latter inengagement with said body member.

5. In a lamp, the combination of a body member having a plurality ofradially disposed apertures therein, a plurality of arms, attachingh'eads positioned at corresponding ends of said arms, said heads beingdisposed in respective apertures, each of said heads having a recess ina side wall thereof adapted to receive an edge of its aperture, and amember having radial cam portions thereon engageable, upon rotation ofthe members, with walls of the respective heads to urge the latterradially outwardly and maintain the edges of the apertures within therespective recesses.

6. In a lamp, th combination of a body member having a plurality ofradially disposed apertures therein, a plurality of arms, attachingheads positionedat corresponding ends of said arms, said heads beingdisposed in respective apertures, each of said heads having a recess ina side wall thereof adapted to receive an edge of its aperture,

and a cylindrical expansible member engageable, upon expansion thereof,with walls of the respective heads to urge the latter radially outwardand maintain the edges of the apertures within th respective recesses.

7. In a lamp, the combination of a tubular tures in the side wallsthereof, a plurality of arms, corresponding ends of which are positionedin respective apertures and engageable with said body member, and afriction member frictionally engaged with the inner surface of said sidewalls, said friction member engageable with said arms to maintain thelatter in engagement with said body member.

8. In a lamp, the combination of a body member having a plurality ofapertures therein, a plurality of arms, attaching heads positioned atcorresponding ends of said arms, said heads being disposed in respectiveapertures, each of said heads having a recess in a side wall thereofadapted to receive an edge of its aperture, and a friction memberfrictionally held in engagement With said body member, said frictionmember engageable with walls of the respective heads to maintain theedges of the apertures within the respective recesses.

9. In a lamp, the combination of a hollow body member having a pluralityof apertures in the side walls thereof, a plurality of arms, attachingheads positioned at corresponding ends of said arms, said heads beingdisposed in respective apertures, each of said heads having a recess ina side wall thereof adapted to receive an edge of its aperture, and afriction ring frictionally held in engagement with the inner side wallsof said body member, one edge of said friction member being engaged withcorresponding walls of the respec-' tive heads to maintain the edges ofthe apertures within the respective recesses.

AUGUST 0. ELTING.

